Improvement in milk-coolers



M. P. POTTER. Milk-Cooler.

' No.20 9,4'20. Patented Oct. 29,- 1878.

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UNITED STATES PATENT OFFICE.

MERRITT F. POTTER, OF HINGKLEY, ILLINOIS.

IMPROVEMENT IN MlLK-COOLERS.

Specification forming part of Letters Patent No. 209,420, dated October29, 1878 application filed February 28, 1878;

To all whom it may concern:

Be it known that I. MERRITT F. POTTER, of Hinckley, State of Illinois,have invented certain new and useful Improvements in Milk- Ooolers; andI do hereby declare that the following is a full, clear, and exactdescription thereof, which will enable others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawing, and to letters of reference marked thereon, whichform a part of this specification, and in which the figure is aperspective view of my improved milk-cooler, having the interiorconstruction partly exposed to View by the breaking away of suitableportions of the milk-cooler.

My invention relates to devices for cooling milk by a coldcurrent ofwater.

The nature of my invention consists in a bucket supported by a vesselcontaining a pipe-coil, and forming therewith a spiral space,

which latter serves as a passage for cold water while the milk is drawnfrom the bucket through the pipe-coil.

A in the drawing represents a bucket, which is supported by acylindrical or conical foot, consisting of two concentric vessels, B 0,having a bottom, D. Between the said vessels a pipecoil, E, issoinclosed as to fit the sides of the vessels perfectly, so that aspiral space, d, is formed between them. The coil E opens at 6 into thebottom a of the bucket A, and passes out of the vessel B at e.

A water-supply pipe, F, connects with the vessel A and the spiral space(1 near the bottom D, and a discharge-pipe, f, serves to draw off thewater from the upper termination of the'space d. The bucket A may beprovided with a bail, to, or other appliances of convenienttransportation.

Operation: The pipe F is connected with the pipe of a hydrant,reservoir, or other water-supply, and the water-supply thereof is causedto enter the space (I, follow its windings upward, and leave the samethrough the discharge-pipe f. The coil E becomes thereby thoroughlycooled, aud now milk is poured into the bucket A.

The milk leaves thebncket gradually by pass ing down through the coil E,which it leaves at the discharge end 6 perfectly cool, as due ingitsdescent it has by degrees been deprived of its warm temperature by meansof the cold temperature of the water surrounding the coil E.

A constant supply of fresh water to the milk-cooler prevents the gradualwarming up of the water, and by having the water introduced at the footof the. cooler the temperature of the water is always the lowest nearthe discharge end of the coil E, and thereby most readily furnishesadditional cool temperature to the alreadycooled milk, which would notbe the case if the fresh water were supplied near the upper end of thecoil E.

I am aware that it is not new, broadly, in a cooling and condensingapparatus to run between two concentric tanks or tubes a spiralpartition-plate and coil or worm.

Having thus described my invention, what I claim, and wish to secure byLetters Patent, 1s

1. A bucket or reservoir, A, the two concentric conical vessels B O, andcoil E, forming a passage-way, d, substantially as showuand described.

2. A bucket or reservoir, A, the two concentric conical vessels B O, andcoil E, forming a passage-way, d, discharges e f, and supplypipe F.

In testimony that I claim the foregoing as my own I hereunto affix mysignature in pres ence of two witnesses.

MERRITT F. POTTER.

Witnesses G. L. O. WHEATEN, PETER GosTER,

